# coding: utf-8
# 2009 © Václav Šmilauer <eudoxos@arcig.cz>
"Test and demonstrate use of PeriTriaxController."
from yade import pack,qt
O.periodic=True

O.cell.hSize=Matrix3(0.1, 0, 0,
		     0 ,0.1, 0,
		    0, 0, 0.1)
		    
sp=pack.SpherePack()
radius=5e-3
num=sp.makeCloud(Vector3().Zero,O.cell.refSize,radius,.2,500,periodic=True) # min,max,radius,rRelFuzz,spheresInCell,periodic
O.bodies.append([sphere(s[0],s[1]) for s in sp])


O.engines=[
	ForceResetter(),
	InsertionSortCollider([Bo1_Sphere_Aabb()],verletDist=.05*radius),
	InteractionLoop(
		[Ig2_Sphere_Sphere_ScGeom()],
		[Ip2_FrictMat_FrictMat_FrictPhys()],
		[Law2_ScGeom_FrictPhys_CundallStrack()]
	),
	#PeriTriaxController(maxUnbalanced=0.01,relStressTol=0.02,goal=[-1e4,-1e4,0],stressMask=3,globUpdate=5,maxStrainRate=[1.,1.,1.],doneHook='triaxDone()',label='triax'),
	#using cell inertia
	PeriTriaxController(dynCell=True,mass=0.2,maxUnbalanced=0.01,relStressTol=0.02,goal=(-1e4,-1e4,0),stressMask=3,globUpdate=5,maxStrainRate=(1.,1.,1.),doneHook='triaxDone()',label='triax'),
	NewtonIntegrator(damping=.2),
]
O.dt=PWaveTimeStep()
O.run();
qt.View()

phase=0
def triaxDone():
	global phase
	if phase==0:
		print 'Here we are: stress',triax.stress,'strain',triax.strain,'stiffness',triax.stiff
		print 'Now εz will go from 0 to .2 while σx and σy will be kept the same.'
		triax.goal=(-1e4,-1e4,-0.2)
		phase+=1
	elif phase==1:
		print 'Here we are: stress',triax.stress,'strain',triax.strain,'stiffness',triax.stiff
		print 'Done, pausing now.'
		O.pause()
		
	

